<template>
  <view>
    <view class="goods-list">
      <view v-for="(item,i) in goodsList" :key="i" @click="gotoDetail(item)">
        <my-goods :item="item"></my-goods>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        queryObj: { // 请求参数对象
          query: '', //查询关键字
          cid: '', //商品分类id
          pagenum: 1, //页码值
          pagesize: 10 //每页显示条数
        },
        goodsList: [],
        total: 0,
        isloading:false //节流阀
      };
    },
    onLoad(options) {
      // console.log(options)
      this.queryObj.query = options.query || ''
      this.queryObj.cid = options.cid || ''
      this.getGoodsList()
    },
    methods: {
      async getGoodsList(cd) { // 获取商品列表数据
      this.isloading = true // 打开节流阀
        const {
          data: res
        } = await uni.$http.get('/api/public/v1/goods/search', this.queryObj)
        this.isloading = false // 关闭节流阀
        // 只要数据请求完毕，就立即按需调用 cb 回调函数
        cd && cd()
        if (res.meta.status !== 200) return uni.$showMsg()
        this.goodsList = [...this.goodsList,...res.message.goods]
        this.total = res.message.total
      },
      gotoDetail(item){
        uni.navigateTo({
          url:'/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id
        })
      }
    },
    onReachBottom() {
      // 当前的页码值 * 每页显示多少条数据 >= 总数条数
      if(this.queryObj.pagenum * this.queryObj.pagesize >= this.total) return uni.$showMsg('数据加载完毕！')
      if(this.isloading) return 
      this.queryObj.pagenum++ //让页码值自增加1
      this.getGoodsList()
    },
    onPullDownRefresh() {
      // 重置关键数据
      this.queryObj.pagenum = 1
      this.total = 0 
      this.isloading = false
      this.goodsList = []
      // 重新发起数据请求
      this.getGoodsList(()=>uni.stopPullDownRefresh())
    }
  }
</script>

<style lang="scss">

</style>
